In-orbit Monitoring

Measurements of satellites in-orbit are a vital part of the maintenance of a live satellite as well. Operating a satellite channel for an in-orbit measurement rather than the intended application comes with significant opportunity cost and hence test duration needs to be minimized as much as possible.

The national and international spectrum usage has continued to undergo a constant cadence of change. These changes necessitate the need to continue to evolve your awareness of valuable spectrum allocation information. As evidenced recently in the U.S.: Analog TV has mostly gone quiet and replaced with Digital TV; the LORAN-C navigation system has been shut…

This application note describes methods using an R&S®ZVA Network Analyzer, one or two R&S®SMB100A Signal Generators and an R&S®FSW Signal Analyzer to accurately measure all the key parameters of frequency converters with embedded local oscillator. A commercial satellite up-converter is used as a device under test example.

This Application Note gives a short overview how signals with two different modulation schemes can be analyzed. The Application Note focuses on DVB-S2(X) signals, but the approach may be used for similar signals as well, as e.g. used in microwave backhaul links.

Demonstration of group delay measurements with the R&S®FSW signal and spectrum analyzer from Rohde & Schwarz. The R&S®FSW-K17 option performs group delay measurements – relative and absolute group delay – for example on amplifiers and frequency converting devices (mixers) over a wide analysis bandwidth using a multicarrier signal.

This video demonstrates group delay and relative phase measurements on frequency converting devices where access to the LO is limited. The measurements are made using the R&S ZVA vector network analyzer equipped with the R&S ZVA-K9 embedded LO mixer delay measurements option from Rohde & Schwarz. Based on a unique and novel two-tone method, mixers…

The R&S®SMW200A is the vector signal generator for the most demanding applications. As a result of its flexibility, performance and intuitive operation, it is a perfect tool for generating complex, digitally modulated signals of high quality.

The R&S®NRP-Z211/R&S®NRP-Z221 two-path sensors with slightly modified dynamic range and performance are ideal for production applications. Due to their high video bandwidth, the R&S®NRP-Z8x wideband power sensors permit accurate time-domain analysis of the envelope power.